There was a drought of female pop stars in the market at that time. Macklemore and Robin Thicke had been dominating. And it was right before Miley Cyrus, Lorde, Katy Perry, Britney Spears, Lady Gaga and Beyonce all stepped in the ring.
It's not that it was a fluke. It's just that there was no competition around at that time. Selena stepped in the ring by herself.
